Class 11 · Body Fluids and Circulation

ECG Waves and Heart's Electrical Activity — NEET Biology

🔥 Predicted for NEET 2027
📖 NCERT Source

Each peak in the ECG is identified with a letter from P to T that corresponds to a specific electrical activity of the heart.

📐See NCERT Figure 15.3 for the diagram.
NCERT Biology · Class 11 · Chapter 15 · Paragraph 28
Why This May Be Tested in NEET 2027

Adjacent to a frequently-asked paragraph in the same chapter.

Practice This Concept
QuestionPredicted for NEET 2027

Which is NOT part of standard ECG trace?

📖 Solution & NCERT Explanation
View solution & NCERT explanation

Correct answer: C U wave

U wave is not discussed in standard NCERT ECG. NEET questions often test outside labels; stick to P, QRS, T only. Option c is an NEET-style distractor.

❓ Frequently Asked Questions
What does NCERT say about Each peak ECG identified?
Each peak in the ECG is identified with a letter from P to T that corresponds to a specific electrical activity of the heart.
Has this concept appeared in NEET?
High probability for NEET 2027. Adjacent to a frequently-asked paragraph in the same chapter.
Which chapter is this from?
Body Fluids and Circulation, Class 11 NCERT Biology.

Through deep analysis of NEET and NTA, 176 of the 180 ReNEET 2026 (June 21) questions were already in the MedicNEET question bank before the exam.

176/180
of the ReNEET 2026 paper (all subjects) was already in the MedicNEET question bank

MedicNEET's Biology question bank is built from the same NCERT lines NTA picks repeatedly. Not random MCQs — questions crafted exactly like NTA crafts them.

176 of 180 ReNEET 2026 questions traced to MedicNEET17,000+ Biology questionsHindi + English
Free to start · Hindi + English · 43,000+ questions · NEET 2026 pattern
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